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target/sparc: Use tcg_gen_movcond_i64 in gen_edge
[qemu/armbru.git] / tcg / tcg-op-ldst.c
blobd54c30559889114faf2ef1c0cad62acd73d24dce
1 /*
2 * Tiny Code Generator for QEMU
3 *
4 * Copyright (c) 2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "tcg/tcg.h"
27 #include "tcg/tcg-temp-internal.h"
28 #include "tcg/tcg-op-common.h"
29 #include "tcg/tcg-mo.h"
30 #include "exec/translation-block.h"
31 #include "exec/plugin-gen.h"
32 #include "tcg-internal.h"
33
34
35 static void check_max_alignment(unsigned a_bits)
36 {
37 #if defined(CONFIG_SOFTMMU)
38 /*
39 * The requested alignment cannot overlap the TLB flags.
40 * FIXME: Must keep the count up-to-date with "exec/cpu-all.h".
41 */
42 tcg_debug_assert(a_bits + 5 <= tcg_ctx->page_bits);
43 #endif
44 }
45
46 static MemOp tcg_canonicalize_memop(MemOp op, bool is64, bool st)
47 {
48 unsigned a_bits = get_alignment_bits(op);
49
50 check_max_alignment(a_bits);
51
52 /* Prefer MO_ALIGN+MO_XX over MO_ALIGN_XX+MO_XX */
53 if (a_bits == (op & MO_SIZE)) {
54 op = (op & ~MO_AMASK) | MO_ALIGN;
55 }
56
57 switch (op & MO_SIZE) {
58 case MO_8:
59 op &= ~MO_BSWAP;
60 break;
61 case MO_16:
62 break;
63 case MO_32:
64 if (!is64) {
65 op &= ~MO_SIGN;
66 }
67 break;
68 case MO_64:
69 if (is64) {
70 op &= ~MO_SIGN;
71 break;
72 }
73 /* fall through */
74 default:
75 g_assert_not_reached();
76 }
77 if (st) {
78 op &= ~MO_SIGN;
79 }
80 return op;
81 }
82
83 static void gen_ldst(TCGOpcode opc, TCGTemp *vl, TCGTemp *vh,
84 TCGTemp *addr, MemOpIdx oi)
85 {
86 if (TCG_TARGET_REG_BITS == 64 || tcg_ctx->addr_type == TCG_TYPE_I32) {
87 if (vh) {
88 tcg_gen_op4(opc, temp_arg(vl), temp_arg(vh), temp_arg(addr), oi);
89 } else {
90 tcg_gen_op3(opc, temp_arg(vl), temp_arg(addr), oi);
91 }
92 } else {
93 /* See TCGV_LOW/HIGH. */
94 TCGTemp *al = addr + HOST_BIG_ENDIAN;
95 TCGTemp *ah = addr + !HOST_BIG_ENDIAN;
96
97 if (vh) {
98 tcg_gen_op5(opc, temp_arg(vl), temp_arg(vh),
99 temp_arg(al), temp_arg(ah), oi);
100 } else {
101 tcg_gen_op4(opc, temp_arg(vl), temp_arg(al), temp_arg(ah), oi);
102 }
103 }
104 }
105
106 static void gen_ldst_i64(TCGOpcode opc, TCGv_i64 v, TCGTemp *addr, MemOpIdx oi)
107 {
108 if (TCG_TARGET_REG_BITS == 32) {
109 TCGTemp *vl = tcgv_i32_temp(TCGV_LOW(v));
110 TCGTemp *vh = tcgv_i32_temp(TCGV_HIGH(v));
111 gen_ldst(opc, vl, vh, addr, oi);
112 } else {
113 gen_ldst(opc, tcgv_i64_temp(v), NULL, addr, oi);
114 }
115 }
116
117 static void tcg_gen_req_mo(TCGBar type)
118 {
119 type &= tcg_ctx->guest_mo;
120 type &= ~TCG_TARGET_DEFAULT_MO;
121 if (type) {
122 tcg_gen_mb(type | TCG_BAR_SC);
123 }
124 }
125
126 /* Only required for loads, where value might overlap addr. */
127 static TCGv_i64 plugin_maybe_preserve_addr(TCGTemp *addr)
128 {
129 #ifdef CONFIG_PLUGIN
130 if (tcg_ctx->plugin_insn != NULL) {
131 /* Save a copy of the vaddr for use after a load. */
132 TCGv_i64 temp = tcg_temp_ebb_new_i64();
133 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
134 tcg_gen_extu_i32_i64(temp, temp_tcgv_i32(addr));
135 } else {
136 tcg_gen_mov_i64(temp, temp_tcgv_i64(addr));
137 }
138 return temp;
139 }
140 #endif
141 return NULL;
142 }
143
144 static void
145 plugin_gen_mem_callbacks(TCGv_i64 copy_addr, TCGTemp *orig_addr, MemOpIdx oi,
146 enum qemu_plugin_mem_rw rw)
147 {
148 #ifdef CONFIG_PLUGIN
149 if (tcg_ctx->plugin_insn != NULL) {
150 qemu_plugin_meminfo_t info = make_plugin_meminfo(oi, rw);
151
152 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
153 if (!copy_addr) {
154 copy_addr = tcg_temp_ebb_new_i64();
155 tcg_gen_extu_i32_i64(copy_addr, temp_tcgv_i32(orig_addr));
156 }
157 plugin_gen_empty_mem_callback(copy_addr, info);
158 tcg_temp_free_i64(copy_addr);
159 } else {
160 if (copy_addr) {
161 plugin_gen_empty_mem_callback(copy_addr, info);
162 tcg_temp_free_i64(copy_addr);
163 } else {
164 plugin_gen_empty_mem_callback(temp_tcgv_i64(orig_addr), info);
165 }
166 }
167 }
168 #endif
169 }
170
171 static void tcg_gen_qemu_ld_i32_int(TCGv_i32 val, TCGTemp *addr,
172 TCGArg idx, MemOp memop)
173 {
174 MemOp orig_memop;
175 MemOpIdx orig_oi, oi;
176 TCGv_i64 copy_addr;
177 TCGOpcode opc;
178
179 tcg_gen_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
180 orig_memop = memop = tcg_canonicalize_memop(memop, 0, 0);
181 orig_oi = oi = make_memop_idx(memop, idx);
182
183 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
184 memop &= ~MO_BSWAP;
185 /* The bswap primitive benefits from zero-extended input. */
186 if ((memop & MO_SSIZE) == MO_SW) {
187 memop &= ~MO_SIGN;
188 }
189 oi = make_memop_idx(memop, idx);
190 }
191
192 copy_addr = plugin_maybe_preserve_addr(addr);
193 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
194 opc = INDEX_op_qemu_ld_a32_i32;
195 } else {
196 opc = INDEX_op_qemu_ld_a64_i32;
197 }
198 gen_ldst(opc, tcgv_i32_temp(val), NULL, addr, oi);
199 plugin_gen_mem_callbacks(copy_addr, addr, orig_oi, QEMU_PLUGIN_MEM_R);
200
201 if ((orig_memop ^ memop) & MO_BSWAP) {
202 switch (orig_memop & MO_SIZE) {
203 case MO_16:
204 tcg_gen_bswap16_i32(val, val, (orig_memop & MO_SIGN
205 ? TCG_BSWAP_IZ | TCG_BSWAP_OS
206 : TCG_BSWAP_IZ | TCG_BSWAP_OZ));
207 break;
208 case MO_32:
209 tcg_gen_bswap32_i32(val, val);
210 break;
211 default:
212 g_assert_not_reached();
213 }
214 }
215 }
216
217 void tcg_gen_qemu_ld_i32_chk(TCGv_i32 val, TCGTemp *addr, TCGArg idx,
218 MemOp memop, TCGType addr_type)
219 {
220 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
221 tcg_debug_assert((memop & MO_SIZE) <= MO_32);
222 tcg_gen_qemu_ld_i32_int(val, addr, idx, memop);
223 }
224
225 static void tcg_gen_qemu_st_i32_int(TCGv_i32 val, TCGTemp *addr,
226 TCGArg idx, MemOp memop)
227 {
228 TCGv_i32 swap = NULL;
229 MemOpIdx orig_oi, oi;
230 TCGOpcode opc;
231
232 tcg_gen_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
233 memop = tcg_canonicalize_memop(memop, 0, 1);
234 orig_oi = oi = make_memop_idx(memop, idx);
235
236 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
237 swap = tcg_temp_ebb_new_i32();
238 switch (memop & MO_SIZE) {
239 case MO_16:
240 tcg_gen_bswap16_i32(swap, val, 0);
241 break;
242 case MO_32:
243 tcg_gen_bswap32_i32(swap, val);
244 break;
245 default:
246 g_assert_not_reached();
247 }
248 val = swap;
249 memop &= ~MO_BSWAP;
250 oi = make_memop_idx(memop, idx);
251 }
252
253 if (TCG_TARGET_HAS_qemu_st8_i32 && (memop & MO_SIZE) == MO_8) {
254 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
255 opc = INDEX_op_qemu_st8_a32_i32;
256 } else {
257 opc = INDEX_op_qemu_st8_a64_i32;
258 }
259 } else {
260 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
261 opc = INDEX_op_qemu_st_a32_i32;
262 } else {
263 opc = INDEX_op_qemu_st_a64_i32;
264 }
265 }
266 gen_ldst(opc, tcgv_i32_temp(val), NULL, addr, oi);
267 plugin_gen_mem_callbacks(NULL, addr, orig_oi, QEMU_PLUGIN_MEM_W);
268
269 if (swap) {
270 tcg_temp_free_i32(swap);
271 }
272 }
273
274 void tcg_gen_qemu_st_i32_chk(TCGv_i32 val, TCGTemp *addr, TCGArg idx,
275 MemOp memop, TCGType addr_type)
276 {
277 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
278 tcg_debug_assert((memop & MO_SIZE) <= MO_32);
279 tcg_gen_qemu_st_i32_int(val, addr, idx, memop);
280 }
281
282 static void tcg_gen_qemu_ld_i64_int(TCGv_i64 val, TCGTemp *addr,
283 TCGArg idx, MemOp memop)
284 {
285 MemOp orig_memop;
286 MemOpIdx orig_oi, oi;
287 TCGv_i64 copy_addr;
288 TCGOpcode opc;
289
290 if (TCG_TARGET_REG_BITS == 32 && (memop & MO_SIZE) < MO_64) {
291 tcg_gen_qemu_ld_i32_int(TCGV_LOW(val), addr, idx, memop);
292 if (memop & MO_SIGN) {
293 tcg_gen_sari_i32(TCGV_HIGH(val), TCGV_LOW(val), 31);
294 } else {
295 tcg_gen_movi_i32(TCGV_HIGH(val), 0);
296 }
297 return;
298 }
299
300 tcg_gen_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
301 orig_memop = memop = tcg_canonicalize_memop(memop, 1, 0);
302 orig_oi = oi = make_memop_idx(memop, idx);
303
304 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
305 memop &= ~MO_BSWAP;
306 /* The bswap primitive benefits from zero-extended input. */
307 if ((memop & MO_SIGN) && (memop & MO_SIZE) < MO_64) {
308 memop &= ~MO_SIGN;
309 }
310 oi = make_memop_idx(memop, idx);
311 }
312
313 copy_addr = plugin_maybe_preserve_addr(addr);
314 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
315 opc = INDEX_op_qemu_ld_a32_i64;
316 } else {
317 opc = INDEX_op_qemu_ld_a64_i64;
318 }
319 gen_ldst_i64(opc, val, addr, oi);
320 plugin_gen_mem_callbacks(copy_addr, addr, orig_oi, QEMU_PLUGIN_MEM_R);
321
322 if ((orig_memop ^ memop) & MO_BSWAP) {
323 int flags = (orig_memop & MO_SIGN
324 ? TCG_BSWAP_IZ | TCG_BSWAP_OS
325 : TCG_BSWAP_IZ | TCG_BSWAP_OZ);
326 switch (orig_memop & MO_SIZE) {
327 case MO_16:
328 tcg_gen_bswap16_i64(val, val, flags);
329 break;
330 case MO_32:
331 tcg_gen_bswap32_i64(val, val, flags);
332 break;
333 case MO_64:
334 tcg_gen_bswap64_i64(val, val);
335 break;
336 default:
337 g_assert_not_reached();
338 }
339 }
340 }
341
342 void tcg_gen_qemu_ld_i64_chk(TCGv_i64 val, TCGTemp *addr, TCGArg idx,
343 MemOp memop, TCGType addr_type)
344 {
345 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
346 tcg_debug_assert((memop & MO_SIZE) <= MO_64);
347 tcg_gen_qemu_ld_i64_int(val, addr, idx, memop);
348 }
349
350 static void tcg_gen_qemu_st_i64_int(TCGv_i64 val, TCGTemp *addr,
351 TCGArg idx, MemOp memop)
352 {
353 TCGv_i64 swap = NULL;
354 MemOpIdx orig_oi, oi;
355 TCGOpcode opc;
356
357 if (TCG_TARGET_REG_BITS == 32 && (memop & MO_SIZE) < MO_64) {
358 tcg_gen_qemu_st_i32_int(TCGV_LOW(val), addr, idx, memop);
359 return;
360 }
361
362 tcg_gen_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
363 memop = tcg_canonicalize_memop(memop, 1, 1);
364 orig_oi = oi = make_memop_idx(memop, idx);
365
366 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
367 swap = tcg_temp_ebb_new_i64();
368 switch (memop & MO_SIZE) {
369 case MO_16:
370 tcg_gen_bswap16_i64(swap, val, 0);
371 break;
372 case MO_32:
373 tcg_gen_bswap32_i64(swap, val, 0);
374 break;
375 case MO_64:
376 tcg_gen_bswap64_i64(swap, val);
377 break;
378 default:
379 g_assert_not_reached();
380 }
381 val = swap;
382 memop &= ~MO_BSWAP;
383 oi = make_memop_idx(memop, idx);
384 }
385
386 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
387 opc = INDEX_op_qemu_st_a32_i64;
388 } else {
389 opc = INDEX_op_qemu_st_a64_i64;
390 }
391 gen_ldst_i64(opc, val, addr, oi);
392 plugin_gen_mem_callbacks(NULL, addr, orig_oi, QEMU_PLUGIN_MEM_W);
393
394 if (swap) {
395 tcg_temp_free_i64(swap);
396 }
397 }
398
399 void tcg_gen_qemu_st_i64_chk(TCGv_i64 val, TCGTemp *addr, TCGArg idx,
400 MemOp memop, TCGType addr_type)
401 {
402 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
403 tcg_debug_assert((memop & MO_SIZE) <= MO_64);
404 tcg_gen_qemu_st_i64_int(val, addr, idx, memop);
405 }
406
407 /*
408 * Return true if @mop, without knowledge of the pointer alignment,
409 * does not require 16-byte atomicity, and it would be adventagous
410 * to avoid a call to a helper function.
411 */
412 static bool use_two_i64_for_i128(MemOp mop)
413 {
414 #ifdef CONFIG_SOFTMMU
415 /* Two softmmu tlb lookups is larger than one function call. */
416 return false;
417 #else
418 /*
419 * For user-only, two 64-bit operations may well be smaller than a call.
420 * Determine if that would be legal for the requested atomicity.
421 */
422 switch (mop & MO_ATOM_MASK) {
423 case MO_ATOM_NONE:
424 case MO_ATOM_IFALIGN_PAIR:
425 return true;
426 case MO_ATOM_IFALIGN:
427 case MO_ATOM_SUBALIGN:
428 case MO_ATOM_WITHIN16:
429 case MO_ATOM_WITHIN16_PAIR:
430 /* In a serialized context, no atomicity is required. */
431 return !(tcg_ctx->gen_tb->cflags & CF_PARALLEL);
432 default:
433 g_assert_not_reached();
434 }
435 #endif
436 }
437
438 static void canonicalize_memop_i128_as_i64(MemOp ret[2], MemOp orig)
439 {
440 MemOp mop_1 = orig, mop_2;
441
442 /* Reduce the size to 64-bit. */
443 mop_1 = (mop_1 & ~MO_SIZE) | MO_64;
444
445 /* Retain the alignment constraints of the original. */
446 switch (orig & MO_AMASK) {
447 case MO_UNALN:
448 case MO_ALIGN_2:
449 case MO_ALIGN_4:
450 mop_2 = mop_1;
451 break;
452 case MO_ALIGN_8:
453 /* Prefer MO_ALIGN+MO_64 to MO_ALIGN_8+MO_64. */
454 mop_1 = (mop_1 & ~MO_AMASK) | MO_ALIGN;
455 mop_2 = mop_1;
456 break;
457 case MO_ALIGN:
458 /* Second has 8-byte alignment; first has 16-byte alignment. */
459 mop_2 = mop_1;
460 mop_1 = (mop_1 & ~MO_AMASK) | MO_ALIGN_16;
461 break;
462 case MO_ALIGN_16:
463 case MO_ALIGN_32:
464 case MO_ALIGN_64:
465 /* Second has 8-byte alignment; first retains original. */
466 mop_2 = (mop_1 & ~MO_AMASK) | MO_ALIGN;
467 break;
468 default:
469 g_assert_not_reached();
470 }
471
472 /* Use a memory ordering implemented by the host. */
473 if ((orig & MO_BSWAP) && !tcg_target_has_memory_bswap(mop_1)) {
474 mop_1 &= ~MO_BSWAP;
475 mop_2 &= ~MO_BSWAP;
476 }
477
478 ret[0] = mop_1;
479 ret[1] = mop_2;
480 }
481
482 static TCGv_i64 maybe_extend_addr64(TCGTemp *addr)
483 {
484 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
485 TCGv_i64 a64 = tcg_temp_ebb_new_i64();
486 tcg_gen_extu_i32_i64(a64, temp_tcgv_i32(addr));
487 return a64;
488 }
489 return temp_tcgv_i64(addr);
490 }
491
492 static void maybe_free_addr64(TCGv_i64 a64)
493 {
494 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
495 tcg_temp_free_i64(a64);
496 }
497 }
498
499 static void tcg_gen_qemu_ld_i128_int(TCGv_i128 val, TCGTemp *addr,
500 TCGArg idx, MemOp memop)
501 {
502 const MemOpIdx orig_oi = make_memop_idx(memop, idx);
503 TCGv_i64 ext_addr = NULL;
504 TCGOpcode opc;
505
506 check_max_alignment(get_alignment_bits(memop));
507 tcg_gen_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
508
509 /* TODO: For now, force 32-bit hosts to use the helper. */
510 if (TCG_TARGET_HAS_qemu_ldst_i128 && TCG_TARGET_REG_BITS == 64) {
511 TCGv_i64 lo, hi;
512 bool need_bswap = false;
513 MemOpIdx oi = orig_oi;
514
515 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
516 lo = TCGV128_HIGH(val);
517 hi = TCGV128_LOW(val);
518 oi = make_memop_idx(memop & ~MO_BSWAP, idx);
519 need_bswap = true;
520 } else {
521 lo = TCGV128_LOW(val);
522 hi = TCGV128_HIGH(val);
523 }
524
525 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
526 opc = INDEX_op_qemu_ld_a32_i128;
527 } else {
528 opc = INDEX_op_qemu_ld_a64_i128;
529 }
530 gen_ldst(opc, tcgv_i64_temp(lo), tcgv_i64_temp(hi), addr, oi);
531
532 if (need_bswap) {
533 tcg_gen_bswap64_i64(lo, lo);
534 tcg_gen_bswap64_i64(hi, hi);
535 }
536 } else if (use_two_i64_for_i128(memop)) {
537 MemOp mop[2];
538 TCGTemp *addr_p8;
539 TCGv_i64 x, y;
540 bool need_bswap;
541
542 canonicalize_memop_i128_as_i64(mop, memop);
543 need_bswap = (mop[0] ^ memop) & MO_BSWAP;
544
545 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
546 opc = INDEX_op_qemu_ld_a32_i64;
547 } else {
548 opc = INDEX_op_qemu_ld_a64_i64;
549 }
550
551 /*
552 * Since there are no global TCGv_i128, there is no visible state
553 * changed if the second load faults. Load directly into the two
554 * subwords.
555 */
556 if ((memop & MO_BSWAP) == MO_LE) {
557 x = TCGV128_LOW(val);
558 y = TCGV128_HIGH(val);
559 } else {
560 x = TCGV128_HIGH(val);
561 y = TCGV128_LOW(val);
562 }
563
564 gen_ldst_i64(opc, x, addr, make_memop_idx(mop[0], idx));
565
566 if (need_bswap) {
567 tcg_gen_bswap64_i64(x, x);
568 }
569
570 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
571 TCGv_i32 t = tcg_temp_ebb_new_i32();
572 tcg_gen_addi_i32(t, temp_tcgv_i32(addr), 8);
573 addr_p8 = tcgv_i32_temp(t);
574 } else {
575 TCGv_i64 t = tcg_temp_ebb_new_i64();
576 tcg_gen_addi_i64(t, temp_tcgv_i64(addr), 8);
577 addr_p8 = tcgv_i64_temp(t);
578 }
579
580 gen_ldst_i64(opc, y, addr_p8, make_memop_idx(mop[1], idx));
581 tcg_temp_free_internal(addr_p8);
582
583 if (need_bswap) {
584 tcg_gen_bswap64_i64(y, y);
585 }
586 } else {
587 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
588 ext_addr = tcg_temp_ebb_new_i64();
589 tcg_gen_extu_i32_i64(ext_addr, temp_tcgv_i32(addr));
590 addr = tcgv_i64_temp(ext_addr);
591 }
592 gen_helper_ld_i128(val, cpu_env, temp_tcgv_i64(addr),
593 tcg_constant_i32(orig_oi));
594 }
595
596 plugin_gen_mem_callbacks(ext_addr, addr, orig_oi, QEMU_PLUGIN_MEM_R);
597 }
598
599 void tcg_gen_qemu_ld_i128_chk(TCGv_i128 val, TCGTemp *addr, TCGArg idx,
600 MemOp memop, TCGType addr_type)
601 {
602 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
603 tcg_debug_assert((memop & MO_SIZE) == MO_128);
604 tcg_debug_assert((memop & MO_SIGN) == 0);
605 tcg_gen_qemu_ld_i128_int(val, addr, idx, memop);
606 }
607
608 static void tcg_gen_qemu_st_i128_int(TCGv_i128 val, TCGTemp *addr,
609 TCGArg idx, MemOp memop)
610 {
611 const MemOpIdx orig_oi = make_memop_idx(memop, idx);
612 TCGv_i64 ext_addr = NULL;
613 TCGOpcode opc;
614
615 check_max_alignment(get_alignment_bits(memop));
616 tcg_gen_req_mo(TCG_MO_ST_LD | TCG_MO_ST_ST);
617
618 /* TODO: For now, force 32-bit hosts to use the helper. */
619
620 if (TCG_TARGET_HAS_qemu_ldst_i128 && TCG_TARGET_REG_BITS == 64) {
621 TCGv_i64 lo, hi;
622 MemOpIdx oi = orig_oi;
623 bool need_bswap = false;
624
625 if ((memop & MO_BSWAP) && !tcg_target_has_memory_bswap(memop)) {
626 lo = tcg_temp_ebb_new_i64();
627 hi = tcg_temp_ebb_new_i64();
628 tcg_gen_bswap64_i64(lo, TCGV128_HIGH(val));
629 tcg_gen_bswap64_i64(hi, TCGV128_LOW(val));
630 oi = make_memop_idx(memop & ~MO_BSWAP, idx);
631 need_bswap = true;
632 } else {
633 lo = TCGV128_LOW(val);
634 hi = TCGV128_HIGH(val);
635 }
636
637 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
638 opc = INDEX_op_qemu_st_a32_i128;
639 } else {
640 opc = INDEX_op_qemu_st_a64_i128;
641 }
642 gen_ldst(opc, tcgv_i64_temp(lo), tcgv_i64_temp(hi), addr, oi);
643
644 if (need_bswap) {
645 tcg_temp_free_i64(lo);
646 tcg_temp_free_i64(hi);
647 }
648 } else if (use_two_i64_for_i128(memop)) {
649 MemOp mop[2];
650 TCGTemp *addr_p8;
651 TCGv_i64 x, y, b = NULL;
652
653 canonicalize_memop_i128_as_i64(mop, memop);
654
655 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
656 opc = INDEX_op_qemu_st_a32_i64;
657 } else {
658 opc = INDEX_op_qemu_st_a64_i64;
659 }
660
661 if ((memop & MO_BSWAP) == MO_LE) {
662 x = TCGV128_LOW(val);
663 y = TCGV128_HIGH(val);
664 } else {
665 x = TCGV128_HIGH(val);
666 y = TCGV128_LOW(val);
667 }
668
669 if ((mop[0] ^ memop) & MO_BSWAP) {
670 b = tcg_temp_ebb_new_i64();
671 tcg_gen_bswap64_i64(b, x);
672 x = b;
673 }
674
675 gen_ldst_i64(opc, x, addr, make_memop_idx(mop[0], idx));
676
677 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
678 TCGv_i32 t = tcg_temp_ebb_new_i32();
679 tcg_gen_addi_i32(t, temp_tcgv_i32(addr), 8);
680 addr_p8 = tcgv_i32_temp(t);
681 } else {
682 TCGv_i64 t = tcg_temp_ebb_new_i64();
683 tcg_gen_addi_i64(t, temp_tcgv_i64(addr), 8);
684 addr_p8 = tcgv_i64_temp(t);
685 }
686
687 if (b) {
688 tcg_gen_bswap64_i64(b, y);
689 gen_ldst_i64(opc, b, addr_p8, make_memop_idx(mop[1], idx));
690 tcg_temp_free_i64(b);
691 } else {
692 gen_ldst_i64(opc, y, addr_p8, make_memop_idx(mop[1], idx));
693 }
694 tcg_temp_free_internal(addr_p8);
695 } else {
696 if (tcg_ctx->addr_type == TCG_TYPE_I32) {
697 ext_addr = tcg_temp_ebb_new_i64();
698 tcg_gen_extu_i32_i64(ext_addr, temp_tcgv_i32(addr));
699 addr = tcgv_i64_temp(ext_addr);
700 }
701 gen_helper_st_i128(cpu_env, temp_tcgv_i64(addr), val,
702 tcg_constant_i32(orig_oi));
703 }
704
705 plugin_gen_mem_callbacks(ext_addr, addr, orig_oi, QEMU_PLUGIN_MEM_W);
706 }
707
708 void tcg_gen_qemu_st_i128_chk(TCGv_i128 val, TCGTemp *addr, TCGArg idx,
709 MemOp memop, TCGType addr_type)
710 {
711 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
712 tcg_debug_assert((memop & MO_SIZE) == MO_128);
713 tcg_debug_assert((memop & MO_SIGN) == 0);
714 tcg_gen_qemu_st_i128_int(val, addr, idx, memop);
715 }
716
717 static void tcg_gen_ext_i32(TCGv_i32 ret, TCGv_i32 val, MemOp opc)
718 {
719 switch (opc & MO_SSIZE) {
720 case MO_SB:
721 tcg_gen_ext8s_i32(ret, val);
722 break;
723 case MO_UB:
724 tcg_gen_ext8u_i32(ret, val);
725 break;
726 case MO_SW:
727 tcg_gen_ext16s_i32(ret, val);
728 break;
729 case MO_UW:
730 tcg_gen_ext16u_i32(ret, val);
731 break;
732 default:
733 tcg_gen_mov_i32(ret, val);
734 break;
735 }
736 }
737
738 static void tcg_gen_ext_i64(TCGv_i64 ret, TCGv_i64 val, MemOp opc)
739 {
740 switch (opc & MO_SSIZE) {
741 case MO_SB:
742 tcg_gen_ext8s_i64(ret, val);
743 break;
744 case MO_UB:
745 tcg_gen_ext8u_i64(ret, val);
746 break;
747 case MO_SW:
748 tcg_gen_ext16s_i64(ret, val);
749 break;
750 case MO_UW:
751 tcg_gen_ext16u_i64(ret, val);
752 break;
753 case MO_SL:
754 tcg_gen_ext32s_i64(ret, val);
755 break;
756 case MO_UL:
757 tcg_gen_ext32u_i64(ret, val);
758 break;
759 default:
760 tcg_gen_mov_i64(ret, val);
761 break;
762 }
763 }
764
765 typedef void (*gen_atomic_cx_i32)(TCGv_i32, TCGv_env, TCGv_i64,
766 TCGv_i32, TCGv_i32, TCGv_i32);
767 typedef void (*gen_atomic_cx_i64)(TCGv_i64, TCGv_env, TCGv_i64,
768 TCGv_i64, TCGv_i64, TCGv_i32);
769 typedef void (*gen_atomic_cx_i128)(TCGv_i128, TCGv_env, TCGv_i64,
770 TCGv_i128, TCGv_i128, TCGv_i32);
771 typedef void (*gen_atomic_op_i32)(TCGv_i32, TCGv_env, TCGv_i64,
772 TCGv_i32, TCGv_i32);
773 typedef void (*gen_atomic_op_i64)(TCGv_i64, TCGv_env, TCGv_i64,
774 TCGv_i64, TCGv_i32);
775
776 #ifdef CONFIG_ATOMIC64
777 # define WITH_ATOMIC64(X) X,
778 #else
779 # define WITH_ATOMIC64(X)
780 #endif
781 #if HAVE_CMPXCHG128
782 # define WITH_ATOMIC128(X) X,
783 #else
784 # define WITH_ATOMIC128(X)
785 #endif
786
787 static void * const table_cmpxchg[(MO_SIZE | MO_BSWAP) + 1] = {
788 [MO_8] = gen_helper_atomic_cmpxchgb,
789 [MO_16 | MO_LE] = gen_helper_atomic_cmpxchgw_le,
790 [MO_16 | MO_BE] = gen_helper_atomic_cmpxchgw_be,
791 [MO_32 | MO_LE] = gen_helper_atomic_cmpxchgl_le,
792 [MO_32 | MO_BE] = gen_helper_atomic_cmpxchgl_be,
793 WITH_ATOMIC64([MO_64 | MO_LE] = gen_helper_atomic_cmpxchgq_le)
794 WITH_ATOMIC64([MO_64 | MO_BE] = gen_helper_atomic_cmpxchgq_be)
795 WITH_ATOMIC128([MO_128 | MO_LE] = gen_helper_atomic_cmpxchgo_le)
796 WITH_ATOMIC128([MO_128 | MO_BE] = gen_helper_atomic_cmpxchgo_be)
797 };
798
799 static void tcg_gen_nonatomic_cmpxchg_i32_int(TCGv_i32 retv, TCGTemp *addr,
800 TCGv_i32 cmpv, TCGv_i32 newv,
801 TCGArg idx, MemOp memop)
802 {
803 TCGv_i32 t1 = tcg_temp_ebb_new_i32();
804 TCGv_i32 t2 = tcg_temp_ebb_new_i32();
805
806 tcg_gen_ext_i32(t2, cmpv, memop & MO_SIZE);
807
808 tcg_gen_qemu_ld_i32_int(t1, addr, idx, memop & ~MO_SIGN);
809 tcg_gen_movcond_i32(TCG_COND_EQ, t2, t1, t2, newv, t1);
810 tcg_gen_qemu_st_i32_int(t2, addr, idx, memop);
811 tcg_temp_free_i32(t2);
812
813 if (memop & MO_SIGN) {
814 tcg_gen_ext_i32(retv, t1, memop);
815 } else {
816 tcg_gen_mov_i32(retv, t1);
817 }
818 tcg_temp_free_i32(t1);
819 }
820
821 void tcg_gen_nonatomic_cmpxchg_i32_chk(TCGv_i32 retv, TCGTemp *addr,
822 TCGv_i32 cmpv, TCGv_i32 newv,
823 TCGArg idx, MemOp memop,
824 TCGType addr_type)
825 {
826 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
827 tcg_debug_assert((memop & MO_SIZE) <= MO_32);
828 tcg_gen_nonatomic_cmpxchg_i32_int(retv, addr, cmpv, newv, idx, memop);
829 }
830
831 static void tcg_gen_atomic_cmpxchg_i32_int(TCGv_i32 retv, TCGTemp *addr,
832 TCGv_i32 cmpv, TCGv_i32 newv,
833 TCGArg idx, MemOp memop)
834 {
835 gen_atomic_cx_i32 gen;
836 TCGv_i64 a64;
837 MemOpIdx oi;
838
839 if (!(tcg_ctx->gen_tb->cflags & CF_PARALLEL)) {
840 tcg_gen_nonatomic_cmpxchg_i32_int(retv, addr, cmpv, newv, idx, memop);
841 return;
842 }
843
844 memop = tcg_canonicalize_memop(memop, 0, 0);
845 gen = table_cmpxchg[memop & (MO_SIZE | MO_BSWAP)];
846 tcg_debug_assert(gen != NULL);
847
848 oi = make_memop_idx(memop & ~MO_SIGN, idx);
849 a64 = maybe_extend_addr64(addr);
850 gen(retv, cpu_env, a64, cmpv, newv, tcg_constant_i32(oi));
851 maybe_free_addr64(a64);
852
853 if (memop & MO_SIGN) {
854 tcg_gen_ext_i32(retv, retv, memop);
855 }
856 }
857
858 void tcg_gen_atomic_cmpxchg_i32_chk(TCGv_i32 retv, TCGTemp *addr,
859 TCGv_i32 cmpv, TCGv_i32 newv,
860 TCGArg idx, MemOp memop,
861 TCGType addr_type)
862 {
863 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
864 tcg_debug_assert((memop & MO_SIZE) <= MO_32);
865 tcg_gen_atomic_cmpxchg_i32_int(retv, addr, cmpv, newv, idx, memop);
866 }
867
868 static void tcg_gen_nonatomic_cmpxchg_i64_int(TCGv_i64 retv, TCGTemp *addr,
869 TCGv_i64 cmpv, TCGv_i64 newv,
870 TCGArg idx, MemOp memop)
871 {
872 TCGv_i64 t1, t2;
873
874 if (TCG_TARGET_REG_BITS == 32 && (memop & MO_SIZE) < MO_64) {
875 tcg_gen_nonatomic_cmpxchg_i32_int(TCGV_LOW(retv), addr, TCGV_LOW(cmpv),
876 TCGV_LOW(newv), idx, memop);
877 if (memop & MO_SIGN) {
878 tcg_gen_sari_i32(TCGV_HIGH(retv), TCGV_LOW(retv), 31);
879 } else {
880 tcg_gen_movi_i32(TCGV_HIGH(retv), 0);
881 }
882 return;
883 }
884
885 t1 = tcg_temp_ebb_new_i64();
886 t2 = tcg_temp_ebb_new_i64();
887
888 tcg_gen_ext_i64(t2, cmpv, memop & MO_SIZE);
889
890 tcg_gen_qemu_ld_i64_int(t1, addr, idx, memop & ~MO_SIGN);
891 tcg_gen_movcond_i64(TCG_COND_EQ, t2, t1, t2, newv, t1);
892 tcg_gen_qemu_st_i64_int(t2, addr, idx, memop);
893 tcg_temp_free_i64(t2);
894
895 if (memop & MO_SIGN) {
896 tcg_gen_ext_i64(retv, t1, memop);
897 } else {
898 tcg_gen_mov_i64(retv, t1);
899 }
900 tcg_temp_free_i64(t1);
901 }
902
903 void tcg_gen_nonatomic_cmpxchg_i64_chk(TCGv_i64 retv, TCGTemp *addr,
904 TCGv_i64 cmpv, TCGv_i64 newv,
905 TCGArg idx, MemOp memop,
906 TCGType addr_type)
907 {
908 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
909 tcg_debug_assert((memop & MO_SIZE) <= MO_64);
910 tcg_gen_nonatomic_cmpxchg_i64_int(retv, addr, cmpv, newv, idx, memop);
911 }
912
913 static void tcg_gen_atomic_cmpxchg_i64_int(TCGv_i64 retv, TCGTemp *addr,
914 TCGv_i64 cmpv, TCGv_i64 newv,
915 TCGArg idx, MemOp memop)
916 {
917 if (!(tcg_ctx->gen_tb->cflags & CF_PARALLEL)) {
918 tcg_gen_nonatomic_cmpxchg_i64_int(retv, addr, cmpv, newv, idx, memop);
919 return;
920 }
921
922 if ((memop & MO_SIZE) == MO_64) {
923 gen_atomic_cx_i64 gen;
924
925 memop = tcg_canonicalize_memop(memop, 1, 0);
926 gen = table_cmpxchg[memop & (MO_SIZE | MO_BSWAP)];
927 if (gen) {
928 MemOpIdx oi = make_memop_idx(memop, idx);
929 TCGv_i64 a64 = maybe_extend_addr64(addr);
930 gen(retv, cpu_env, a64, cmpv, newv, tcg_constant_i32(oi));
931 maybe_free_addr64(a64);
932 return;
933 }
934
935 gen_helper_exit_atomic(cpu_env);
936
937 /*
938 * Produce a result for a well-formed opcode stream. This satisfies
939 * liveness for set before used, which happens before this dead code
940 * is removed.
941 */
942 tcg_gen_movi_i64(retv, 0);
943 return;
944 }
945
946 if (TCG_TARGET_REG_BITS == 32) {
947 tcg_gen_atomic_cmpxchg_i32_int(TCGV_LOW(retv), addr, TCGV_LOW(cmpv),
948 TCGV_LOW(newv), idx, memop);
949 if (memop & MO_SIGN) {
950 tcg_gen_sari_i32(TCGV_HIGH(retv), TCGV_LOW(retv), 31);
951 } else {
952 tcg_gen_movi_i32(TCGV_HIGH(retv), 0);
953 }
954 } else {
955 TCGv_i32 c32 = tcg_temp_ebb_new_i32();
956 TCGv_i32 n32 = tcg_temp_ebb_new_i32();
957 TCGv_i32 r32 = tcg_temp_ebb_new_i32();
958
959 tcg_gen_extrl_i64_i32(c32, cmpv);
960 tcg_gen_extrl_i64_i32(n32, newv);
961 tcg_gen_atomic_cmpxchg_i32_int(r32, addr, c32, n32,
962 idx, memop & ~MO_SIGN);
963 tcg_temp_free_i32(c32);
964 tcg_temp_free_i32(n32);
965
966 tcg_gen_extu_i32_i64(retv, r32);
967 tcg_temp_free_i32(r32);
968
969 if (memop & MO_SIGN) {
970 tcg_gen_ext_i64(retv, retv, memop);
971 }
972 }
973 }
974
975 void tcg_gen_atomic_cmpxchg_i64_chk(TCGv_i64 retv, TCGTemp *addr,
976 TCGv_i64 cmpv, TCGv_i64 newv,
977 TCGArg idx, MemOp memop, TCGType addr_type)
978 {
979 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
980 tcg_debug_assert((memop & MO_SIZE) <= MO_64);
981 tcg_gen_atomic_cmpxchg_i64_int(retv, addr, cmpv, newv, idx, memop);
982 }
983
984 static void tcg_gen_nonatomic_cmpxchg_i128_int(TCGv_i128 retv, TCGTemp *addr,
985 TCGv_i128 cmpv, TCGv_i128 newv,
986 TCGArg idx, MemOp memop)
987 {
988 if (TCG_TARGET_REG_BITS == 32) {
989 /* Inline expansion below is simply too large for 32-bit hosts. */
990 MemOpIdx oi = make_memop_idx(memop, idx);
991 TCGv_i64 a64 = maybe_extend_addr64(addr);
992
993 gen_helper_nonatomic_cmpxchgo(retv, cpu_env, a64, cmpv, newv,
994 tcg_constant_i32(oi));
995 maybe_free_addr64(a64);
996 } else {
997 TCGv_i128 oldv = tcg_temp_ebb_new_i128();
998 TCGv_i128 tmpv = tcg_temp_ebb_new_i128();
999 TCGv_i64 t0 = tcg_temp_ebb_new_i64();
1000 TCGv_i64 t1 = tcg_temp_ebb_new_i64();
1001 TCGv_i64 z = tcg_constant_i64(0);
1002
1003 tcg_gen_qemu_ld_i128_int(oldv, addr, idx, memop);
1004
1005 /* Compare i128 */
1006 tcg_gen_xor_i64(t0, TCGV128_LOW(oldv), TCGV128_LOW(cmpv));
1007 tcg_gen_xor_i64(t1, TCGV128_HIGH(oldv), TCGV128_HIGH(cmpv));
1008 tcg_gen_or_i64(t0, t0, t1);
1009
1010 /* tmpv = equal ? newv : oldv */
1011 tcg_gen_movcond_i64(TCG_COND_EQ, TCGV128_LOW(tmpv), t0, z,
1012 TCGV128_LOW(newv), TCGV128_LOW(oldv));
1013 tcg_gen_movcond_i64(TCG_COND_EQ, TCGV128_HIGH(tmpv), t0, z,
1014 TCGV128_HIGH(newv), TCGV128_HIGH(oldv));
1015
1016 /* Unconditional writeback. */
1017 tcg_gen_qemu_st_i128_int(tmpv, addr, idx, memop);
1018 tcg_gen_mov_i128(retv, oldv);
1019
1020 tcg_temp_free_i64(t0);
1021 tcg_temp_free_i64(t1);
1022 tcg_temp_free_i128(tmpv);
1023 tcg_temp_free_i128(oldv);
1024 }
1025 }
1026
1027 void tcg_gen_nonatomic_cmpxchg_i128_chk(TCGv_i128 retv, TCGTemp *addr,
1028 TCGv_i128 cmpv, TCGv_i128 newv,
1029 TCGArg idx, MemOp memop,
1030 TCGType addr_type)
1031 {
1032 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
1033 tcg_debug_assert((memop & (MO_SIZE | MO_SIGN)) == MO_128);
1034 tcg_gen_nonatomic_cmpxchg_i128_int(retv, addr, cmpv, newv, idx, memop);
1035 }
1036
1037 static void tcg_gen_atomic_cmpxchg_i128_int(TCGv_i128 retv, TCGTemp *addr,
1038 TCGv_i128 cmpv, TCGv_i128 newv,
1039 TCGArg idx, MemOp memop)
1040 {
1041 gen_atomic_cx_i128 gen;
1042
1043 if (!(tcg_ctx->gen_tb->cflags & CF_PARALLEL)) {
1044 tcg_gen_nonatomic_cmpxchg_i128_int(retv, addr, cmpv, newv, idx, memop);
1045 return;
1046 }
1047
1048 gen = table_cmpxchg[memop & (MO_SIZE | MO_BSWAP)];
1049 if (gen) {
1050 MemOpIdx oi = make_memop_idx(memop, idx);
1051 TCGv_i64 a64 = maybe_extend_addr64(addr);
1052 gen(retv, cpu_env, a64, cmpv, newv, tcg_constant_i32(oi));
1053 maybe_free_addr64(a64);
1054 return;
1055 }
1056
1057 gen_helper_exit_atomic(cpu_env);
1058
1059 /*
1060 * Produce a result for a well-formed opcode stream. This satisfies
1061 * liveness for set before used, which happens before this dead code
1062 * is removed.
1063 */
1064 tcg_gen_movi_i64(TCGV128_LOW(retv), 0);
1065 tcg_gen_movi_i64(TCGV128_HIGH(retv), 0);
1066 }
1067
1068 void tcg_gen_atomic_cmpxchg_i128_chk(TCGv_i128 retv, TCGTemp *addr,
1069 TCGv_i128 cmpv, TCGv_i128 newv,
1070 TCGArg idx, MemOp memop,
1071 TCGType addr_type)
1072 {
1073 tcg_debug_assert(addr_type == tcg_ctx->addr_type);
1074 tcg_debug_assert((memop & (MO_SIZE | MO_SIGN)) == MO_128);
1075 tcg_gen_atomic_cmpxchg_i128_int(retv, addr, cmpv, newv, idx, memop);
1076 }
1077
1078 static void do_nonatomic_op_i32(TCGv_i32 ret, TCGTemp *addr, TCGv_i32 val,
1079 TCGArg idx, MemOp memop, bool new_val,
1080 void (*gen)(TCGv_i32, TCGv_i32, TCGv_i32))
1081 {
1082 TCGv_i32 t1 = tcg_temp_ebb_new_i32();
1083 TCGv_i32 t2 = tcg_temp_ebb_new_i32();
1084
1085 memop = tcg_canonicalize_memop(memop, 0, 0);
1086
1087 tcg_gen_qemu_ld_i32_int(t1, addr, idx, memop);
1088 tcg_gen_ext_i32(t2, val, memop);
1089 gen(t2, t1, t2);
1090 tcg_gen_qemu_st_i32_int(t2, addr, idx, memop);
1091
1092 tcg_gen_ext_i32(ret, (new_val ? t2 : t1), memop);
1093 tcg_temp_free_i32(t1);
1094 tcg_temp_free_i32(t2);
1095 }
1096
1097 static void do_atomic_op_i32(TCGv_i32 ret, TCGTemp *addr, TCGv_i32 val,
1098 TCGArg idx, MemOp memop, void * const table[])
1099 {
1100 gen_atomic_op_i32 gen;
1101 TCGv_i64 a64;
1102 MemOpIdx oi;
1103
1104 memop = tcg_canonicalize_memop(memop, 0, 0);
1105
1106 gen = table[memop & (MO_SIZE | MO_BSWAP)];
1107 tcg_debug_assert(gen != NULL);
1108
1109 oi = make_memop_idx(memop & ~MO_SIGN, idx);
1110 a64 = maybe_extend_addr64(addr);
1111 gen(ret, cpu_env, a64, val, tcg_constant_i32(oi));
1112 maybe_free_addr64(a64);
1113
1114 if (memop & MO_SIGN) {
1115 tcg_gen_ext_i32(ret, ret, memop);
1116 }
1117 }
1118
1119 static void do_nonatomic_op_i64(TCGv_i64 ret, TCGTemp *addr, TCGv_i64 val,
1120 TCGArg idx, MemOp memop, bool new_val,
1121 void (*gen)(TCGv_i64, TCGv_i64, TCGv_i64))
1122 {
1123 TCGv_i64 t1 = tcg_temp_ebb_new_i64();
1124 TCGv_i64 t2 = tcg_temp_ebb_new_i64();
1125
1126 memop = tcg_canonicalize_memop(memop, 1, 0);
1127
1128 tcg_gen_qemu_ld_i64_int(t1, addr, idx, memop);
1129 tcg_gen_ext_i64(t2, val, memop);
1130 gen(t2, t1, t2);
1131 tcg_gen_qemu_st_i64_int(t2, addr, idx, memop);
1132
1133 tcg_gen_ext_i64(ret, (new_val ? t2 : t1), memop);
1134 tcg_temp_free_i64(t1);
1135 tcg_temp_free_i64(t2);
1136 }
1137
1138 static void do_atomic_op_i64(TCGv_i64 ret, TCGTemp *addr, TCGv_i64 val,
1139 TCGArg idx, MemOp memop, void * const table[])
1140 {
1141 memop = tcg_canonicalize_memop(memop, 1, 0);
1142
1143 if ((memop & MO_SIZE) == MO_64) {
1144 gen_atomic_op_i64 gen = table[memop & (MO_SIZE | MO_BSWAP)];
1145
1146 if (gen) {
1147 MemOpIdx oi = make_memop_idx(memop & ~MO_SIGN, idx);
1148 TCGv_i64 a64 = maybe_extend_addr64(addr);
1149 gen(ret, cpu_env, a64, val, tcg_constant_i32(oi));
1150 maybe_free_addr64(a64);
1151 return;
1152 }
1153
1154 gen_helper_exit_atomic(cpu_env);
1155 /* Produce a result, so that we have a well-formed opcode stream
1156 with respect to uses of the result in the (dead) code following. */
1157 tcg_gen_movi_i64(ret, 0);
1158 } else {
1159 TCGv_i32 v32 = tcg_temp_ebb_new_i32();
1160 TCGv_i32 r32 = tcg_temp_ebb_new_i32();
1161
1162 tcg_gen_extrl_i64_i32(v32, val);
1163 do_atomic_op_i32(r32, addr, v32, idx, memop & ~MO_SIGN, table);
1164 tcg_temp_free_i32(v32);
1165
1166 tcg_gen_extu_i32_i64(ret, r32);
1167 tcg_temp_free_i32(r32);
1168
1169 if (memop & MO_SIGN) {
1170 tcg_gen_ext_i64(ret, ret, memop);
1171 }
1172 }
1173 }
1174
1175 #define GEN_ATOMIC_HELPER(NAME, OP, NEW) \
1176 static void * const table_##NAME[(MO_SIZE | MO_BSWAP) + 1] = { \
1177 [MO_8] = gen_helper_atomic_##NAME##b, \
1178 [MO_16 | MO_LE] = gen_helper_atomic_##NAME##w_le, \
1179 [MO_16 | MO_BE] = gen_helper_atomic_##NAME##w_be, \
1180 [MO_32 | MO_LE] = gen_helper_atomic_##NAME##l_le, \
1181 [MO_32 | MO_BE] = gen_helper_atomic_##NAME##l_be, \
1182 WITH_ATOMIC64([MO_64 | MO_LE] = gen_helper_atomic_##NAME##q_le) \
1183 WITH_ATOMIC64([MO_64 | MO_BE] = gen_helper_atomic_##NAME##q_be) \
1184 }; \
1185 void tcg_gen_atomic_##NAME##_i32_chk(TCGv_i32 ret, TCGTemp *addr, \
1186 TCGv_i32 val, TCGArg idx, \
1187 MemOp memop, TCGType addr_type) \
1188 { \
1189 tcg_debug_assert(addr_type == tcg_ctx->addr_type); \
1190 tcg_debug_assert((memop & MO_SIZE) <= MO_32); \
1191 if (tcg_ctx->gen_tb->cflags & CF_PARALLEL) { \
1192 do_atomic_op_i32(ret, addr, val, idx, memop, table_##NAME); \
1193 } else { \
1194 do_nonatomic_op_i32(ret, addr, val, idx, memop, NEW, \
1195 tcg_gen_##OP##_i32); \
1196 } \
1197 } \
1198 void tcg_gen_atomic_##NAME##_i64_chk(TCGv_i64 ret, TCGTemp *addr, \
1199 TCGv_i64 val, TCGArg idx, \
1200 MemOp memop, TCGType addr_type) \
1201 { \
1202 tcg_debug_assert(addr_type == tcg_ctx->addr_type); \
1203 tcg_debug_assert((memop & MO_SIZE) <= MO_64); \
1204 if (tcg_ctx->gen_tb->cflags & CF_PARALLEL) { \
1205 do_atomic_op_i64(ret, addr, val, idx, memop, table_##NAME); \
1206 } else { \
1207 do_nonatomic_op_i64(ret, addr, val, idx, memop, NEW, \
1208 tcg_gen_##OP##_i64); \
1209 } \
1210 }
1211
1212 GEN_ATOMIC_HELPER(fetch_add, add, 0)
1213 GEN_ATOMIC_HELPER(fetch_and, and, 0)
1214 GEN_ATOMIC_HELPER(fetch_or, or, 0)
1215 GEN_ATOMIC_HELPER(fetch_xor, xor, 0)
1216 GEN_ATOMIC_HELPER(fetch_smin, smin, 0)
1217 GEN_ATOMIC_HELPER(fetch_umin, umin, 0)
1218 GEN_ATOMIC_HELPER(fetch_smax, smax, 0)
1219 GEN_ATOMIC_HELPER(fetch_umax, umax, 0)
1220
1221 GEN_ATOMIC_HELPER(add_fetch, add, 1)
1222 GEN_ATOMIC_HELPER(and_fetch, and, 1)
1223 GEN_ATOMIC_HELPER(or_fetch, or, 1)
1224 GEN_ATOMIC_HELPER(xor_fetch, xor, 1)
1225 GEN_ATOMIC_HELPER(smin_fetch, smin, 1)
1226 GEN_ATOMIC_HELPER(umin_fetch, umin, 1)
1227 GEN_ATOMIC_HELPER(smax_fetch, smax, 1)
1228 GEN_ATOMIC_HELPER(umax_fetch, umax, 1)
1229
1230 static void tcg_gen_mov2_i32(TCGv_i32 r, TCGv_i32 a, TCGv_i32 b)
1231 {
1232 tcg_gen_mov_i32(r, b);
1233 }
1234
1235 static void tcg_gen_mov2_i64(TCGv_i64 r, TCGv_i64 a, TCGv_i64 b)
1236 {
1237 tcg_gen_mov_i64(r, b);
1238 }
1239
1240 GEN_ATOMIC_HELPER(xchg, mov2, 0)
1241
1242 #undef GEN_ATOMIC_HELPER
armbru's QEMU hackery